Power Supply Mix

PGE has bought or plans to buy power or unique claims on the electricity produced from these types of power plants. The portion supplied by PGE is based on recent utility production and purchases. All percentages are approximate.

*Biomass is inclusive of biomass, biogas, landfill gasses and other biogenics.

Source: Oregon Department of Energy, 2015 data for Green Source. All percentages are approximate and may not add up to 100% due to rounding. “New” refers to power generated from facilities that became operational in the last 15 years.

Environmental Impact

Amounts of pollutants per kWh of supply mix compared to the Northwest U.S average.

Source: Oregon Department of Energy, 2015 data.

Carbon dioxide is a major contributor to global climate change. Among the likely impacts for Oregon are less mountain snow pack and less water available in summer, higher sea levels, and threats to forests, crops, and fish and wildlife habitat. Coal and natural gas are the main sources of carbon dioxide from power generation.

Nitrogen oxide and sulfur dioxide are air pollutants that affect human health, plants, fish and wildlife. Nitrogen oxides contribute to smog. Coal is the main source of these pollutants from power generation. Natural gas plants produce nitrogen oxides.

Nuclear fuel wastes contain the most radioactive and long-lived waste formed during operation of nuclear power plants. These wastes are stored at nuclear power reactor sites. The United States has no permanent disposal site for these wastes.

Some hydropower dams contribute to the decline of salmon and other fish and wildlife populations.